GDI resource of iexplorer leaks a lot, especially in WinXP(japanese) comparing with winXP(english)

CONFIGURATION:
 OS : WinXP(SP2, Japanese and english)
 JRE : jre5.0u7
      java version "1.5.0_07"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_07-b02)
      Java HotSpot(TM) Client VM (build 1.5.0_07-b02, mixed mode, sharing)
 CPU : PentiumIII 700[MHz]
 Mem: 256 MB

REPRODUCE:
 1) Unfold the attached zip file(ArcTest)
 2) modify ArcTest\testcase\top.html adjusting to your directory structure.
 3) double click the Top.html
  IE windows appears
 4) Select "1.5.0_xx ArcTest" in pull down menu
 5) Set "5000" in t"Interval" textbox
 6) click "Launch" button
  "ArcTest" is opened and closed automatically

HOW to measure GDI :
 1) Open "Task Manager".
 2) Click "process" tag
 3) select [view]-[select columns]
 3) check GDI Objects
 4) Watch the value in GDI objects column corresponding to "iexplore"(image name)

RESULT:
 The followings are result after about 40 minutes runs in WinXP(Japanese)

time(min) Num. of GDI
-----------+----------------------------------------
   0 331
   5 390
  10 538
  15 708
  20 934
  30 1217
  35 1379
  40 1630
  45 1700

On the ither hand, In WinXP(english).
time(min) Num. of GDI
-----------+----------------------------------------
   0 301
   5 311
  10 339
  25 371
  35 391
  40 297
  60 357
......
 12(hr.) 424
The issue has been linked to using JP IME as default input language. It is reproducible even on EN XP, but with Asian languages installed and JP IME selected as default input language. If input is switched to English, there's no GDI leak.